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Related Experiment Videos

Utilizing the UMLS for semantic mapping between terminologies.

Kin Wah Fung1, Olivier Bodenreider

  • 1National Library of Medicine, Bethesda, Maryland, USA. {kwfung|olivier}@nlm.nih.gov

AMIA ... Annual Symposium Proceedings. AMIA Symposium
|June 17, 2006
PubMed
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A new algorithm maps medical terminologies within the Unified Medical Language System (UMLS), achieving 86% coverage for SNOMED CT terms. Mapping via UMLS synonymy shows promise for quality assurance in terminology creation.

Area of Science:

  • Medical Informatics
  • Computational Linguistics
  • Knowledge Representation

Background:

  • Unified Medical Language System (UMLS) integrates diverse biomedical vocabularies.
  • Accurate mapping between terminologies like SNOMED CT and ICD-9-CM is crucial for data interoperability.
  • Existing mapping methods can be labor-intensive and prone to errors.

Purpose of the Study:

  • To develop and evaluate an algorithm for automated candidate mapping between UMLS terminologies.
  • To assess the algorithm's performance using SNOMED CT to ICD-9-CM mappings as a gold standard.
  • To identify the most effective mapping strategies within the algorithm.

Main Methods:

  • Algorithm derivation utilizing synonymy, explicit relations, and hierarchical structures within UMLS.

Related Experiment Videos

  • Evaluation against a gold standard set of SNOMED CT to ICD-9-CM mappings.
  • Analysis of recall and precision for candidate mappings generated.

    • Main Results:

    • The algorithm identified candidate mappings for 86% of SNOMED CT terms.
    • Achieved a recall of 42% and a precision of 20% for the generated mappings.
    • Mapping based on UMLS synonymy demonstrated high accuracy.

    Conclusions:

    • The developed algorithm offers a scalable approach to generating candidate terminology mappings.
    • UMLS synonymy mapping is a potentially valuable tool for quality assurance in terminology mapping.
    • Further refinement of the algorithm can improve mapping accuracy and utility.